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Richard Kenner c7b1ed2b88 (optimize_reg_copy_1): Only update reg_live_length if it is
non-negative.

From-SVN: r11596
1996-03-22 09:11:37 -05:00
gcc (optimize_reg_copy_1): Only update reg_live_length if it is 1996-03-22 09:11:37 -05:00